Hello yet again

just set a rule on the button where the last action is to close the form
without offering to save.

That will do it

To get next or previous record set each form with a unique numbered ID (URN)

Get your next button to be a rule that sets the queryfield for the URN to be
1 + the current datafield URN and the previous button will set the queryfield
for the URN to the value of the datafield URN - 1

The next action in both these cases is to query the datasource and job done.

Instead of opening up a new form can't the new record button just clear the
data from the current form and change the action of the submit button.

That would prevent the task pane coming up and is the way i have done it a
few times.

Cheers again Adam